Seed perturbations for primordial magnetic fields from MSSM flat directions

Details Seed perturbations for primordial magnetic fields from MSSM flat directions Seed perturbations for primordial magnetic fields from MSSM flat directions

2004-04-29

arxiv.org/abs/hep-ph/0404269v1

JCAP 0411 (2004) 001

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, RevTeX4

Scientific paper

10.1088/1475-7516/2004/11/001

We demonstrate that the MSSM flat directions can naturally account for the seed magnetic fields in the early Universe. The non-zero vacuum expectation value of an MSSM flat direction condensate provides masses to the gauge fields and thereby breaks conformal invariance. During inflation the condensate receives spatial perturbations and $SU(2) x U(1)_Y$ gauge currents are generated together with (hyper)magnetic fields. When these long wavelength vector perturbations reenter our horizon they give rise to $U(1)_{em}$ magnetic fields with an amplitude of $10^{-30}$ Gauss, as required by the dynamo mechanism.

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